Fremantle captain Nat Fyfe will miss the remainder of the 2021 season after dislocating his shoulder in the Dockers loss to Sydney.

Fyfe had been subbed out of the Dockers game against the Swans after his troublesome shoulder popped out again.

Fremantle confirmed post-game that the dual Brownlow medalist would undergo surgery that would see him out for the season. The injury is a massive blow to the Dockers top eight hopes.

Fyfe was joined on the bench by star Michael Walters who suffered a hamstring injury.

Walters went off in the third quarter and soon had ice on his hamstring signalling the end of his day.

Justin Longmuir said the injuries weren't ideal in a tight contest up to that point.

โ€œTo lose your captain before halftime is not ideal,โ€ Longmuir said.

โ€œThat shoulder looks like it's the same injury heโ€™s had this year and been playing with.

โ€œThe likelihood is he will probably go into surgery Iโ€™d imagine now that he has had a re-injure of it, his season might be done.

Longmuir said that Walters would race the clock to be back fit this season but that the club would await scans before making any final decision.

โ€œSonnyโ€™s got a hammy, so we'll get it scannedโ€ฆwe're getting close to the end of the year now as well, so he's going to cut it fine to get back this year,โ€ Longmuir said.

Defender Alex Pearce went down with a head knock late in the game. Longmuir said that no risks were going to be taken given the serious nature of head injuries.

โ€œHe got a head knock, and then had to do the 20-minute protocol,โ€ Pearce said.

โ€œThe game situation just wasn't worth risking him and putting him back out there.

โ€œI havenโ€™t caught up with the doctors to see what the actual injury is yet.

โ€œI'm not sure whether it was concussion or not, but he definitely had the assessment and we weren't willing to risk him.โ€